it's not that libpthread would be missing, it's where it's supposed to be:-bash-3.2# find / -name libpthread* -print/usr/lib/libpthread.1/usr/lib/pa20_64/libp/libpthread.a/usr/lib/pa20_64/libpthread.a/usr/lib/pa20_64/libpthread_tr.a/usr/lib/pa20_64/libpthread.1/usr/lib/pa20_64/libpthread.sl/usr/lib/pa20_64/libpthread_tr.1/usr/lib/pa20_64/libpthread_tr.sl/usr/lib/libpthread.sl/usr/lib/libpthread_tr.1/usr/lib/libpthread_tr.sl/usr/lib/libp/libpthread.a/usr/lib/libpthread.a/usr/lib/libpthread_tr.a